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Showing posts with the label mvvm

How Dependency Injection Containers Work in C#?

Dependency Injection (DI) containers, such as Unity or DryIoc, help manage the creation and lifetime of object dependencies in C#. They facilitate the Inversion of Control (IoC) principle, allowing you to focus on writing clean, maintainable code without worrying about the complexities of instantiating dependencies manually. How DI Containers Work? Registration:  You define which concrete classes should be used to fulfill specific interface contracts. This allows the DI container to know what to instantiate when a class requests a particular dependency. Resolution:  When an instance of a class is requested, the DI container looks at the registered services, resolves the dependencies, and creates the object with the required dependencies injected. Lifetime Management:  The container manages the lifecycle of the dependencies. You can specify whether instances should be singleton (one instance for the entire application), transient (a new instance each time), or scoped (one ...
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The Benefits of MVVM: Why it's Still a Popular Architecture in 2023

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Model-View-ViewModel (MVVM) is an architecture pattern that has been around for more than a decade, but it remains a popular choice for developers in 2023. MVVM is a software design pattern that separates the user interface (UI) code from the business logic and data access layers, making it easier to develop and maintain complex applications. In this blog post, we'll explore why MVVM is still a popular architecture pattern in 2023 and the benefits it offers to developers. Separation of Concerns One of the primary benefits of MVVM is that it separates the UI code from the business logic and data access layers. This separation of concerns makes it easier to develop and maintain complex applications. Developers can focus on the functionality of each layer independently, which results in code that is easier to read, test, and maintain. Testability MVVM makes it easier to test the application. Since the UI code is separated from the business logic, developers can test the functionality...
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Pagination of DataGrid in WPF using MVVM

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In this Post i will explain the pagination using the MVVM pattern. Lets first create the View with DataGrid and pagination control with First, Previous, Next and Last buttons and we will also have the number of record per page to be displayed in DataGrid option which is ComboBox and in this DataGrid i will load data from CSV file. View I will create the view with DataGrid like this And in this DataGrid i will load data from CSV file <Window x:Class="CURD.Views.EmployeeDetails"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"         xmlns:local="clr-namespace:CURD.Views"         mc:Ignorable="d"         Title="E...
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Step by step guide to implement the command in wpf

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To create the custom command we need to implement ICommand interface which is having two method called CanExecute and Execute and one EventHandler called CanExecuteChanged. CanExecute method is responsible to tell if commend will execute or not. Execute method perform the action. Step to create custom command: Implement the ICommand write a constructor which will take two parameters of type Action and Func respectively. if you want to trigger CanExecute on property change then add the method which should invoke CanExecuteChanged  EventHandler . Why Action? Action delegate is used for performing the action. As our actual implementation of  this Action will present in our ViewModel and we need to pass ViewModel method as a constructor parameter so that we can assign it in our CustomCommand and can invoke when require. Why Func? Func delegate is used when we want to pass some value and return some value. As our actual implementation of  this Func will ...
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How to implement custom paging on a WPF DataGrid?

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In this post we are going to learn the pagination in the data grid where we will have options to select the number of records to be displayed per page in the data grid. you can select the count from the record per page combobox and based on that you can see the records. I will add the four buttons which is used for show the first page, previous page, next page and last page. Below is DataGrid control code:  <DataGrid Grid.Row="1" ItemsSource="{Binding EmployeeCollection}"                    AutoGenerateColumns="False" CanUserAddRows="False">             <DataGrid.Columns>                 <DataGridTextColumn Header="ID" Binding="{Binding ID}"/>                 <DataGridTextColumn Header="Name" Binding="{Binding Name}"/>                 <DataGridTextColumn He...
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